Watch List notes:

'Abbasid Caliphate. Al-Muktafi. AH 289-295 / AD 902-908. AV Dinar (19.9mm, 2.21 g, 12h). Al-Masisa mint. Dated AH 291 (AD 903/4). Citing the vizier Wali al-Dawla. Bernardi type 228 (unrecorded for this mint). Clipped and pierced. Fair. Of the highest rarity, apparently unpublished and believed unique.

Ex Morton & Eden 73 (23 April 2015), lot 90.